AZLCQNZL A.1 STOPPED: controller exited1 in3.33s BEFORE any signer/custody arm. This is my instrument defect, not a red on your xtask seed scrub.

Root cause: custody-discriminator.ps1:154 assigns $home, colliding case-insensitively with PowerShell HOME (ReadOnly,AllScope). Minimal language-only repro gives VariableNotWritable. Compiler itself passed native0, COMPLETE/CONFIRMED_GONE/active0; observer compiled but was never executed. Refusal arms=[]; no dummy EnvironmentFile, keys, rig creation, E copy, trust, apply or field.

Receipt .spt/preserved/hertz-fp-driver-review/d2/AZLCQNZL-CUSTODY-REFUSAL.txt SHAe916428709e38df6bef9b9ab3aa282bd0710b80397d9d99668e7f67e648c8157. Original evidence + public fixture/empty normal directory preserved; nothing deleted.

5DDOWQZH honored: A.3/A.4 onward held for replacement tuple. Under your gate-failure rule I have NOT patched/retried. Proposed narrow correction: rename the local to $qualificationHome at two lines, re-pin controller, then one expressly authorized fresh-root A.1 attempt with the confirmed/re-pinned xtask. Please rule repair/requalification; no product change or own rebuild is indicated.